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22 Cards in this Set
- Front
- Back
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What is an open circulatory system?
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A system where blood is not in vessels, but spreads over the organs in some areas.
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What are some appendages?
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antennae, legs, claws, pincers
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What is a crop?
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A sac used for temporary food storage in earthworms.
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What is a gizzard?
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A muscular structure that grinds soil.
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What is water-vascular?
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A network of water filled canals with tube feet.
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What is an exoskeleton?
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A hard, thick, outer covering that covers, supports, and protects an arthropod's body..
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What is molting?
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Shedding of the exoskeleton.
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What is metamorphosis?
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Changes some animals go through to become adults/
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What is a gill?
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An organ used to breath underwater.
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What is a closed circulatory system?
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When blood is contained in vessels (example the earthworm)
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What body plan do simple worms have?
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bilateral symmetry
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Echinoderms, like sea stars, have no head or brain, but they do have a _____________?
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Nerve ring
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What is a tongue-like organ that works like a file?
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radula
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What animal group has the most species?
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insects
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Segmented worms have what bristle-like structure to help them move?
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setae
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What are spiracles?
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Openings on the abdomen and thorax through which air exchange occurs.
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What is an example of a cephalopod?
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octopus
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What are nymphs?
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smaller versions of their parents
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How many legs do arachnids have?
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8
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Which end of an earthworm is its rounded back?
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dorsal
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What is the flat front of an earthworm?
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The ventral end
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Be able to label the parts of an earthworm and earthworm.
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.
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